EP2719304A1 - Back rest assembly - Google Patents
Back rest assembly Download PDFInfo
- Publication number
- EP2719304A1 EP2719304A1 EP20120188247 EP12188247A EP2719304A1 EP 2719304 A1 EP2719304 A1 EP 2719304A1 EP 20120188247 EP20120188247 EP 20120188247 EP 12188247 A EP12188247 A EP 12188247A EP 2719304 A1 EP2719304 A1 EP 2719304A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- backrest
- rückenlehnentragarm
- assembly
- spring
- bearing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 208000007623 Lordosis Diseases 0.000 abstract description 3
- 238000005452 bending Methods 0.000 description 6
- 239000000725 suspension Substances 0.000 description 6
- 239000000463 material Substances 0.000 description 3
- 239000011435 rock Substances 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
Images
Classifications
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C7/00—Parts, details, or accessories of chairs or stools
- A47C7/36—Support for the head or the back
- A47C7/40—Support for the head or the back for the back
- A47C7/46—Support for the head or the back for the back with special, e.g. adjustable, lumbar region support profile; "Ackerblom" profile chairs
- A47C7/462—Support for the head or the back for the back with special, e.g. adjustable, lumbar region support profile; "Ackerblom" profile chairs adjustable by mechanical means
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C7/00—Parts, details, or accessories of chairs or stools
- A47C7/36—Support for the head or the back
- A47C7/40—Support for the head or the back for the back
- A47C7/402—Support for the head or the back for the back adjustable in height
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C7/00—Parts, details, or accessories of chairs or stools
- A47C7/36—Support for the head or the back
- A47C7/40—Support for the head or the back for the back
- A47C7/44—Support for the head or the back for the back with elastically-mounted back-rest or backrest-seat unit in the base frame
- A47C7/443—Support for the head or the back for the back with elastically-mounted back-rest or backrest-seat unit in the base frame with coil springs
Definitions
- the invention relates to a backrest assembly according to the features of claim 1.
- the invention relates in particular to a backrest assembly with a backrest in which the lumbar support area is adjustable in height and curvature.
- Lumbar supports and lumbar supports are used on car seats, slats of beds and chairs. Especially during several hours of office work while sitting, the muscles can relax due to fatigue and collapse the spine. Manufacturers of office chairs therefore offer adjustable Lumbar supports that provide a relaxed posture and relief of the spine. In a simple embodiment, backrests with a curvature serving as a mere support are mentioned in the prior art. In particular, in seating such as office chairs but there is a need to provide a lumbar support that is adjustable in height and in curvature.
- EP 1 566120 A1 already discloses an office chair with a backrest, wherein the backrest has stacked and transversely extending support ribs, which serve as a mere support. These are arched bending elastic and thus assume the function of a lumbar support. Further, a pull cord mechanism is provided to adjust the curvature of the lumbar support.
- a height-adjustable lumbar support is disclosed.
- an office chair with a backrest and arranged on a flexible guide band height-adjustable lumbar support is proposed, wherein the guide band is so flexible that it yields under load from a seated or a chair user in the printing direction.
- the guide band is biased and the bias of the guide band is also changeable.
- a disadvantage of this embodiment is that the backrest on the one hand in its lateral support areas does not provide sufficient support by means of the lumbar support and beyond a predominantly punctiform load in the central region of the backrest is given, so that a local pressure area around the lumbar vertebrae is generated.
- the spring force is automatically increased by pressing the flexible guide belt with increasing curvature and thus reduces the elasticity with the result that a set high curvature is always connected with high spring load through the guide band.
- the invention is therefore an object of the invention to provide an improvedightlehenan angel with a customizable Lordosenstweil Scheme, which is as easy to adjust and individually adaptable to the back shape of the seated, the backrest assembly should be designed so that the seat occupant a total stable, the back supporting backrest receives.
- the basic idea of the present invention is to provide a backrest assembly, in particular for an office chair, which has a in the height direction H and transverse direction Q extending, deformable-preferably elastically deformable-back brace, with a provided in the height direction H and in the curvature adjustable lumbar support area.
- a senatorlehnentragarm is provided on which the backrest is connected to an upper fastening element with the legislativelehnentragarm, and further wherein an adjustment is provided on the scholarlehnentragarm, which is adjustable in the height direction H so that when adjusting the adjustment, the height and curvature of the Lordosenstütz Symposiumes are changeable.
- the backrest has an elastically deformable backrest mat.
- the backrest mat is advantageously arranged inside or partially inside the backrest.
- a backrest made of a flexible deformable material is preferably having an elastically deformable backrest mat, which is attached at its upper edge to a soirlehentragarm and bulges when pushing the lower edge of the backrest forward, whereby the curvature and the position of the front curve point can be adjusted.
- a backrest made of a flexible deformable material is preferably having an elastically deformable backrest mat, which is attached at its upper edge to a soirlehentragarm and bulges when pushing the lower edge of the backrest forward, whereby the curvature and the position of the front curve point can be adjusted.
- the backrest comprises an elastically deformable backrest mat inside. Due to the elasticity of the backrest mat, it is therefore possible to adjust the total elastic backrest of the natural shape of the spine. As soon as a chair user leans against the protruding lordosis support area while sitting on the chair, the backrest and the backrest mat conform to the natural form of the spine due to their elasticity. As a result, a further advantage of the planet that is given, as well as people with differently shaped spine can use the chair equally, without the need for an individual adaptation to the respective spine curvature of the seat occupant.
- the degree of warping and the elasticity (adaptability) of the deformable backrest can be additionally influenced by recesses, in particular horizontal slots in the backrest mat. Also, by the arrangement of slots in different areas and in different shapes, the elasticity of the backrest can be adapted to the requirements in the different backrest areas.
- the adjusting device via lateral in the transverse direction Q protruding mounting arms which are connected thereto by means provided bearing backrest side abutment (hereinafter also referred to as bearing) with the backrest, so that when moving the adjustment in height direction H (thus in height) the Location and thus the height of the lumbar support area can be changed with and at the same time can also adjust the curvature of the lumbar support area.
- bearing backrest side abutment hereinafter also referred to as bearing
- the backrest By attaching the backrest to the outwardly projecting mounting arms of the adjustment, the backrest receives a total lateral support, in which the pressure is transmitted through the upper body of the seat occupant to the entire backrest and this sufficiently stabilizes the back.
- a stabilizing crossbar performs a particularly good support function in the lumbar support area. Consequently, a comfortable and fatigue-free sitting is achieved for the seat occupant, in which distribute the occurring loads, while good support of the lumbar vertebra, evenly over a wide range in the transverse direction of the backrest.
- the upper corner regions of the backrest mat and thus the upper corners of the backrest are not attached to the sinlehnentragarm or a cross arm.
- the corner areas of the backrest and backrest mat are elastically twisted to conform to the torsion angle of the upper body.
- the attachment arms of the adjustment device extend transversely over the entire width of the backrest and are particularly preferably fastened to the outer edge region of the backrest. Due to the lateral suspension The backrest in the edge region of the adjusting a bending beam principle is implemented, in which a particularly preferred deformation of the backrest is given, so that the backrest behaves under load according to the aforementioned bending beam principle.
- the adjusting device has a latching device that can be moved back and forth from a latching position into an adjustment position.
- the movable locking device is actuated by means of an actuating arm of the locking position in the adjustment position, whereby the adjustment can be adjusted in height.
- the actuation can be done along the appropriate slide bearings. This ensures that the desired height and curvature of the lumbar support area can be adjusted by moving the adjusting device and this position for the seat occupant can be fixed by the actuating arm, that the locking device is released and locked in this position.
- the adjusting device has a bearing bracket with a sliding bearing, wherein the bearing bracket is connected to the holder arms to form an opening.
- the alloylehentragarm is passed through the opening with its sliding bearing portion.
- the bearing bracket, the planetlehentragarm and an inner surface of the holder arms each form a part of the sliding bearing, on which the adjusting device can be actuated back and forth and lock it by means of locking means.
- the fastening arms in each case form an end-side bearing section for fastening the backrest-side bearing to the backrest.
- the Swiss-Shuna is formed in its height direction in a substantially curved shape and particularly advantageous in an S-shaped curved shape.
- a slide bearing portion of the istlehentragearms is therefore also S-shaped, whereby the distance and thus the curvature of the backrest can be particularly advantageous adapt to the natural shape of the spine.
- the bearings are laterally at vertically extending surfaces, i. attached to vertically extending side surfaces of the backrest.
- the mounting arms engage around the backrest at least partially laterally (wing-like) with their endeitigen bearing sections.
- the counsellenenan extract can also be designed such that the actuating arm extends substantially parallel to one of the mounting arms, preferably located at the end of the actuating arm between the mounting arm and the backrest, an accessible to the chair user operating portion to the actuating arm of his To be able to release the locking position.
- the adjustment can be particularly pleasant to use, since it is possible to simultaneously encompass the operating portion and the two end-side bearing sections and adjust the adjustment in height.
- the inventive arrangement and design of the adjustment of the mounting and storage points of the backrest can provide a particularly ergonomic adjustable backrest assembly. Thanks to such an embodiment, the material of the backrest at sufficient elasticity, the pressure force with which acts against the backrest supporting a seat occupant, record and distribute evenly, but without the shape of the backrest, especially in the edge area undesirable deformed.
- a seat back assembly having a deformable backrest and a resilient backrest support arm.
- the lower attachment end of mustlehentragarms is preferably formed via a connecting plate with a spring device for the resilient attachment of the backrest assembly to a preferably central chair support.
- a central chair support may protrude through a portion of the connecting plate ofindexlehentragarms while the spring device is resiliently mounted.
- a suitable combination of stability and flexibility can be achieved by suitable combination of the elasticity of the deformable backrest and by the selection of the spring constant of the spring device.
- the backrest assembly is characterized in that the lower attachment end ofcethentragarms is connected to a spring device, preferably via a connecting plate, for resilient attachment of the backrest assembly to a chair.
- a spring device preferably via a connecting plate, for resilient attachment of the backrest assembly to a chair.
- Particularly advantageous is the use of an adjustable coil spring in the spring device.
- the coil spring extends from the connection plate together with a threaded rod in the height direction, such that the connecting plate of the coil spring against a, forming a support top of a chair provided on the seat support can be stretched.
- the lower attachment end of has a projecting attachment portion with openings for attachment to the connection plate.
- the spring device has an axial threaded rod, which is arranged within the coil spring. Furthermore, the spring device preferably has a height-adjustable axle bearing for the threaded rod.
- the threaded rod is passed through a preferably cylindrical opening through the Achsalger. As a result, the coil spring experiences in its Federchase a guide through the threaded rod.
- an inclined stop for mounting on a corresponding mating surface of a seat carrier mounted on a chair.
- the seat carrier serves as a support for the connecting plate and / or a mounting portion of the istlehnentragarms.
- the coil spring presses the connecting plate of the backrest assembly on the support of the seat support and is fixed in this position. If the backrest is deflected by a user of the chair backwards, the connection plate lifts off the support until an equilibrium of forces between the force on the backrest and the restoring force of the coil spring on the connection plate has been established. In this position, the seat occupant can rock back and forth and undergoes a support for the back.
- the spring force of the coil spring is adjustable, for each seat user an individually preferred support effect can be set.
- FIG. 1 shows a sectional view through an office chair 2 with an inventive Backrest assembly 1.
- the office chair 2 includes a central chair support 60 which serves as a chair leg.
- a seat 61 is arranged with a seat 62.
- a first exemplary embodiment of a backrest arrangement 1 according to the invention is fastened to the chair support 60 on a seat support 63.
- the seat support 63 is therefore attached to the chair support 60 with a ring section 64.
- the ring portion 64 has a cylindrical opening for receiving a portion of the chair support 60.
- the top of the seat support 63 forms a support 68 for the discourselehnenanordung first
- the backrest assembly 1 a toward the upper end 16 of the legislative effort to which the backrest 3 is fixed in an upper region of the backrest 3.
- the backrest mat 5 has a plurality of transverse recesses 5a.
- the mininglehnentragarm 10 has a substantially S-shaped curvature and thus follows the natural course of the spine.
- the backrest 3 is a deformable backrest, which is secured to opposite side surfaces 31,32 of the backrest 3 by means of bearings and that by means of backrest-side thrust bearing 30 (short: bearing 30).
- the backrest side bearing 30 are preferably designed as a rotatable bearing.
- a first bending beam results in height direction H between the upper and the lower suspension point of the backrest, while a second bending beam between the two lateral bearings 30 results in the transverse direction Q.
- FIG. 3 is a perspective view of an embodiment of a backrest assembly 1 is shown.
- the strictlehnentragarm 10 has a sliding bearing portion 14. On slide bearing portion 14 slide bearings 13 are formed in the form of elongated grooves.
- a fastener 11 for attachment of the backrest 3.
- a height in H up and down movable adjustment device 20 is shown, which forms two mounting arms 22 projecting laterally in the transverse direction Q of the newlylehentragearm 10.
- the fastening arms 22 extend over the entire width of a (in Fig. 3 Backrest 3.
- the fastening arms 22 each end bearing portions 23 on. At the end bearing portions 23 are bearings 21, as this example in FIG. 4 can be seen.
- the bearings 21 are used for attachment to counter bearings.
- a counter bearing back side bearings 30 are provided on the backrest 3.
- the adjusting device 20 has a preferably bridge-like bearing bracket 26, as in section in Fig. 5 can be seen. This is releasably connected to each mounting arm 22 to form an opening 28 by means of fasteners 33.
- the opening 28 is formed in its cross-sectional shape substantially corresponding to the cross-sectional shape of the counsellehentragarms 10 in the region of the sliding bearing portion 14.
- the preciselylehnentragarm 10 sticks with its plain bearing portion 14 through the opening 28 therethrough.
- the adjusting device 20 can be moved up and down along the plain bearing section 14.
- FIG. 5 showing a sectional view along the section A - A Fig. 3
- the slide bearing 27 formed by the bearing bracket 26 has two slide bearing cams 27a, 27b which engage with the elongate slide bearings 13 of the backrest support arm 10.
- the adjusting device 20 further has a latching device 24 which is connected to an actuating arm 25.
- the latching device 24 is designed as a reciprocating latching device 24, which by means of the actuating arm 25 of a locking position in an adjustment position (corresponding Fig. 3 ) is operable. In the latching position engages a latching means 24a in a counter-latching means 24b, which is formed on the legislativelehentragarm 10 corresponding.
- an actuating portion 29, preferably at the end of the actuating arm 25 the latching means 24a of the latching device 24 can be released from the counter-latching means 24b, whereby the adjusting device 20 in the height direction H up and down along the plain bearings 13, 27 can move.
- a locking means 24a and 24b are, for example, gears or racks or rack sections with corresponding teeth that can engage with each other.
- FIG. 6 a further embodiment of a backrest arrangement 1 according to the invention is shown.
- a spring device 50 is arranged by means of a connecting plate 58.
- the spring device 50 is connected to a spring suspension 51 with the connection plate 58.
- the spring device 50 has a coil spring 52 with an upper bearing means 53.
- the coil spring 52 is resiliently mounted about a threaded rod 54. Within the coil spring 52, the threaded rod 54 is arranged.
- FIG. 8 shows a superimposed detail view FIG. 7 Once in the starting position and once in the spring-loaded position of the coil spring 52.
- the backrest 3 can be resiliently deflected by the action of a force in a rear direction shown by arrow (arrow at the upper end of the backrest), whereby the force is transmitted via the connecting plate 58 to the coil spring 52 and this is compressed accordingly.
- the coil spring 52 is tensioned, the resulting restoring force of the spring 52 is transmitted to the legislative counterforce.
- the desired deflection and thus the spring property of the backrest assembly 1 can be adjusted.
- FIG. 3 As can be seen, the lower end of counsellehentragarms 10 is provided with a projecting mounting portion 56 with mounting holes. Further, a seat support 63 is provided with a ring portion 64. The seat support 63 is, as in FIG. 1 shown attached to the chair support 60 by means of the ring portion 64.
- the attachment portion 56 is, as in FIGS Figures 3 and 6 seen plugged into a mounting cassette 57 and connected thereto.
- the mounting cassette 57 has a connecting plate 58, on which the spring device 50 is arranged.
- a bottom of the connecting plate 58 and the mounting cassette 57 rests on the surface of the seat support 63, which thus forms a support 68 for the backrest assembly 1.
- the attachment portion 56 has in the present embodiment, an inclined stop 59, as in Fig. 1 and Fig. 3 is apparent.
- the spring device 50 has a coil spring 52, which is clamped against an upper bearing means 53.
- the direction of actuation of the spring device 50 is defined by the threaded rod 54.
- a threaded rod 54 is arranged, which is connected to the upper bearing means 53.
- the connecting plate 58 is connected to a, about the threaded rod 54 up and down movable axle bearing 65.
- the axle bearing 65 has an opening 67 for the threaded rod 64. As in FIG. 8 can be seen, the threaded rod 54 dives through the opening 67 of the axle bearing 65, so that the associated end of the connecting plate 58 with the axle box 65 can be moved up and down.
- the axle bearing 65 is formed from a cylindrical ring member with a spring plate 66 attached thereto, on which the lower end of the coil spring 52 rests.
- the coil spring 52 presses, as long as the backrest is not deflected, the connecting plate 58 on the seat support 63 in a lower position (starting position).
- the connecting plate 58 and the attached axle bearing 65 in the, in the FIG. 8 transferred shown upper position.
- a wobble game is provided between the inner shell of the axle bearing 65 and the outer shell of the threaded rod 54. This means that the center line of the axle bearing 65 in the lower position (starting position) is offset from the center line of the threaded rod 54 by a defined distance d transversely to the axial direction.
- a chair user can rock back and forth with the seat back 3 between a home position and a deflected position (deflection position). At the same time, this results in a corresponding up and down movement of the connecting plate 58.
- the position of the spring device 50 relative to the central chair support 60 is slightly offset from the front (in the direction of the front seat area) arranged. Such a configuration allows the use of a relatively long spring arm together with the connecting plate 58 of the strictlylehnenanordung. 1
- the connecting plate 58 with an opening in the region of Ring section 64 provided, which is designed such that a deflection movement of the connecting plate 58 can be made by an angle ⁇ . It is therefore preferred, as in the present embodiment, the inner diameter of the opening in the region of the annular portion 64 is greater than the outer diameter of the annular portion 64 form.
- the mounting cassette 57 has a lateral stop 70, which rests in the starting position of the seat back assembly 1 against a side surface of the annular portion 60.
- this connection can also be done by means of a plurality of connecting plates 58 or similar connecting devices.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chairs Characterized By Structure (AREA)
- Chair Legs, Seat Parts, And Backrests (AREA)
Abstract
Description
Die Erfindung betrifft eine Rückenlehnenanordnung gemäß den Merkmalen von Anspruch 1. Die Erfindung betrifft insbesondere eine Rückenlehnenanordnung mit einer Rückenlehne, bei der der Lordosenstützbereich in der Höhe und der Krümmung einstellbar ist.The invention relates to a backrest assembly according to the features of
Als Lordose bezeichnen Mediziner die nach vorn gerichtete natürliche Krümmung der menschlichen Wirbelsäule im Bereich der Lumbalwirbel, welchen die fünf Wirbel des Lendenabschnittes der Wirbelsäule umfassen. Anwendung finden Lumbalstützen und Lordosenstützen an Autositzen, Lattenrosten von Betten und Stühlen. Besonders während mehrstündigen Büroarbeiten im Sitzen kann die Muskulatur durch Ermüdung erschlaffen und die Wirbelsäule zusammensacken. Hersteller von Bürostühlen bieten daher einstellbare Lordosenstützen an, die für eine entspannte Körperhaltung und Entlastung des Rückgrats sorgen. In einer einfachen Ausbildung sind Rückenlehnen mit einer als bloße Stütze dienende Wölbung im Stand der Technik erwähnt. Insbesondere bei Sitzmöbeln wie Bürostühlen besteht aber ein Bedarf, eine Lordosenstütze vorzusehen, die in der Höhe und in der Krümmung einstellbar ist. Beispielsweise ist in der Druckschrift
In der
Aus der
Der Erfindung liegt daher die Aufgabe zugrunde, eine verbesserte Rückenlehenanordnung mit einem anpassbaren Lordosenstützbereich bereitzustellen, welche möglichst einfach einstellbar und individuell an die Rückenform des Sitzenden anpassbar ist, wobei die Rückenlehnenanordnung derart ausgebildet sein soll, dass der Sitznutzer eine insgesamt stabile, den Rücken abstützende Rückenlehne erhält.The invention is therefore an object of the invention to provide an improved Rückenlehenanordnung with a customizable Lordosenstützbereich, which is as easy to adjust and individually adaptable to the back shape of the seated, the backrest assembly should be designed so that the seat occupant a total stable, the back supporting backrest receives.
Diese Aufgabe wird gelöst mit einer Rückenlehnenanordnung gemäß Anspruch 1. Grundgedanke der vorliegenden Erfindung ist es dabei, eine Rückenlehnenanordnung insbesondere für einen Bürostuhl bereitzustellen, die eine sich in Höhenrichtung H und Querrichtung Q erstreckende, verformbare -vorzugsweise elastisch verformbare -Rückenlehe aufweist, die mit einem in der Höhenrichtung H und in der Krümmung einstellbaren Lordosenstützbereich versehen ist. Erfindungsgemäß wird dabei ein Rückenlehnentragarm vorgesehen, an dem die Rückenlehne mit einem oberen Befestigungselement mit dem Rückenlehnentragarm verbunden ist, und wobei ferner eine Verstellvorrichtung am Rückenlehnentragarm vorgesehen ist, die in Höhenrichtung H derart verstellbar ist, dass beim Verstellen der Verstellvorrichtung die Höhe und die Krümmung des Lordosenstützbereiches veränderbar sind. Mit Vorteil verfügt die Rückenlehne über eine elastisch verformbare Lehnenmatte. Die Lehnenmatte ist mit Vorteil im Inneren oder teilweise im inneren der Rückenlehne angeordnet.This object is achieved with a backrest assembly according to
Das Prinzip der vorliegenden Erfindung besteht demnach darin, dass einerseits eine Rückenlehne aus einem flexibel verformbaren Material bereitgestellt wird, die bevorzugt eine elastisch verformbare Lehnenmatte aufweist, die an ihrem oberen Rand an einem Rückenlehnentragarm befestigt ist und sich beim Hochschieben des unteren Randes der Rückenlehne nach vorne wölbt, womit die Krümmung und die Lage des vorderen Krümmungspunktes eingestellt werden können. Damit wird dem Benutzer eine selbst wählbare, ihm angenehme Unterstützung des Rückens geboten.The principle of the present invention is therefore that on the one hand provided a backrest made of a flexible deformable material is preferably having an elastically deformable backrest mat, which is attached at its upper edge to a Rückenlehnentragarm and bulges when pushing the lower edge of the backrest forward, whereby the curvature and the position of the front curve point can be adjusted. Thus the user is offered a self-selectable, pleasant support of the back.
Je nachdem, wie weit man den unteren Rand der Rückenlehne über eine Verstellvorrichtung nach oben betätigt, desto stärker oder weniger stark ist die Verformung der Rückenlehne und damit die Ausprägung der Krümmung des Lordosenstützbereichs. Durch Auswahl eines elastisch verformbaren Materials für die Rückenlehne ist es möglich, diese der Kontur des Rückens insgesamt anzupassen. Bevorzugt umfasst die Rückenlehne im Inneren eine elastisch verformbare Lehnenmatte. Durch die Elastizität der Lehnenmatte ist es demnach möglich die insgesamt elastische Rückenlehne der natürlichen Form der Wirbelsäule anzupassen. Sobald sich ein Stuhlnutzer beim Sitzen auf dem Stuhl gegen den vorgewölbten Lordosenstützbereich lehnt, passt sich infolge der Elastizität die Rückenlehne und die Lehnenmatte der natürlichen Form der Wirbelsäule an. Hierdurch ist ein weiterer Vorteil der erfindungsgemäßen Rückenlehnenanordung gegeben, da auch Personen mit unterschiedlich ausgebildeter Wirbelsäule den Stuhl gleichermaßen verwenden können, ohne dass es einer individuellen Anpassung an die jeweilige Wirbelsäulenkrümmung des Sitznutzers bedarf.Depending on how far you press the lower edge of the backrest via an adjustment up, the stronger or less strong is the deformation of the backrest and thus the expression of the curvature of the lumbar support area. By selecting an elastically deformable material for the backrest, it is possible to adapt this to the contour of the back overall. Preferably, the backrest comprises an elastically deformable backrest mat inside. Due to the elasticity of the backrest mat, it is therefore possible to adjust the total elastic backrest of the natural shape of the spine. As soon as a chair user leans against the protruding lordosis support area while sitting on the chair, the backrest and the backrest mat conform to the natural form of the spine due to their elasticity. As a result, a further advantage of the Rückenlehnenanordung invention is given, as well as people with differently shaped spine can use the chair equally, without the need for an individual adaptation to the respective spine curvature of the seat occupant.
Der Grad der Verwölbung sowie die Elastizität (Anpassungsfähigkeit) der verformbaren Rückenlehne kann durch Ausnehmungen, insbesondere horizontale Schlitze in der Lehnenmatte noch zusätzlich beeinflusst werden. Auch durch die Anordnung von Schlitzen in unterschiedlichen Bereichen und in unterschiedlicher Gestalt kann die Elastizität der Rückenlehne auf die Anforderungen in den unterschiedlichen Rückenlehnenbereichen angepasst werden.The degree of warping and the elasticity (adaptability) of the deformable backrest can be additionally influenced by recesses, in particular horizontal slots in the backrest mat. Also, by the arrangement of slots in different areas and in different shapes, the elasticity of the backrest can be adapted to the requirements in the different backrest areas.
Bevorzugt verfügt die Verstellvorrichtung über seitliche in Querrichtung Q hervorstehende Befestigungsarme, die mittels daran vorgesehener Lager mit rückenlehnenseitigen Gegenlager (im folgenden ebenfalls als Lager bezeichnet) mit der Rückenlehne verbunden sind, so dass beim Verschieben der Verstellvorrichtung in Höhenrichtung H (somit in der Höhe) die Lage und somit auch die Höhe des Lordosenstützbereichs mit verändert werden kann und sich gleichzeitig auch die Krümmung des Lordosenstützbereiches einstellen lässt.Preferably, the adjusting device via lateral in the transverse direction Q protruding mounting arms which are connected thereto by means provided bearing backrest side abutment (hereinafter also referred to as bearing) with the backrest, so that when moving the adjustment in height direction H (thus in height) the Location and thus the height of the lumbar support area can be changed with and at the same time can also adjust the curvature of the lumbar support area.
Durch die Befestigung der Rückenlehne an den nach außen herausragenden Befestigungsarmen der Verstellvorrichtung erhält die Rückenlehne insgesamt eine seitliche Abstützung, bei der der Druck durch den Oberkörper des Sitznutzers auf die gesamte Rückenlehne übertragen wird und diese den Rücken ausreichend stabilisiert. Somit erfüllt ein stabilisierender Querriegel eine besonders gute Stützfunktion im Lordosenstützbereich. Folglich wird ein für den Sitznutzer angenehmes und ermüdungsfreieres Sitzen erzielt, bei dem sich die auftretenden Belastungen, bei gleichzeitig guter Stütze der Lumbalwirbel, gleichmäßig über einen breiten Bereich in Querrichtung der Rückenlehne verteilen.By attaching the backrest to the outwardly projecting mounting arms of the adjustment, the backrest receives a total lateral support, in which the pressure is transmitted through the upper body of the seat occupant to the entire backrest and this sufficiently stabilizes the back. Thus, a stabilizing crossbar performs a particularly good support function in the lumbar support area. Consequently, a comfortable and fatigue-free sitting is achieved for the seat occupant, in which distribute the occurring loads, while good support of the lumbar vertebra, evenly over a wide range in the transverse direction of the backrest.
Mit Vorteil sind die oberen Eckbereiche der Lehnenmatte und damit die oberen Ecken der Rückenlehne nicht an dem Rückenlehnentragarm oder einem Querarm befestigt. Dadurch können bei einer Drehung des Oberkörpers z.B. wenn der Sitznutzer nach einem Gegenstand hinter dem Stuhl greift, die Eckbereiche der Rückenlehne und der Lehnenmatte elastisch tordiert werden, um sich so dem Torsionswinkel des Oberkörpers anpassen.Advantageously, the upper corner regions of the backrest mat and thus the upper corners of the backrest are not attached to the Rückenlehnentragarm or a cross arm. As a result, during a rotation of the upper body, e.g. when the seat occupant grips an object behind the chair, the corner areas of the backrest and backrest mat are elastically twisted to conform to the torsion angle of the upper body.
Vorzugsweise verlaufen die Befestigungsarme der Verstellvorrichtung quer über die gesamte Breite der Rückenlehne und sind besonders bevorzugt am äußeren Randbereich der Rückenlehne befestigt. Durch die seitliche Aufhängung der Rückenlehne im Randbereich an der Verstellvorrichtung wird ein Biegebalkenprinzip umgesetzt, bei dem eine besonders bevorzugte Verformung der Rückenlehne gegeben ist, so dass sich die Rückenlehne unter Belastung gemäß dem zuvor genannten Biegebalkenprinzip verhält.Preferably, the attachment arms of the adjustment device extend transversely over the entire width of the backrest and are particularly preferably fastened to the outer edge region of the backrest. Due to the lateral suspension The backrest in the edge region of the adjusting a bending beam principle is implemented, in which a particularly preferred deformation of the backrest is given, so that the backrest behaves under load according to the aforementioned bending beam principle.
In einer vorteilhaften Ausführungsform der vorliegenden Erfindung weist die Verstellvorrichtung eine von einer Rastposition in eine Verstellposition hin-und her bewegbare Rastvorrichtung auf. Die bewegbare Rastvorrichtung ist mittels eines Betätigungsarmes von der Rastposition in die Verstellposition betätigbar, wodurch sich die Verstellvorrichtung in der Höhe einstellen lässt. Die Betätigung kann entlang an dafür vorgesehenen Gleitlagern erfolgen. Hierdurch wird gewährleistet, dass durch Verschieben der Verstellvorrichtung die gewünschte Höhe und Krümmung des Lordosenstützbereiches eingestellt werden und mittels des Betätigungsarms diese Stellung für den Sitznutzer dadurch fixiert werden kann, dass die Rastvorrichtung in dieser Position losgelassen und arretiert wird.In an advantageous embodiment of the present invention, the adjusting device has a latching device that can be moved back and forth from a latching position into an adjustment position. The movable locking device is actuated by means of an actuating arm of the locking position in the adjustment position, whereby the adjustment can be adjusted in height. The actuation can be done along the appropriate slide bearings. This ensures that the desired height and curvature of the lumbar support area can be adjusted by moving the adjusting device and this position for the seat occupant can be fixed by the actuating arm, that the locking device is released and locked in this position.
In einer bevorzugten Ausführungsform weist die Verstellvorrichtung eine Lagerkonsole mit einem Gleitlager auf, wobei die Lagerkonsole unter Bildung einer Öffnung mit den Halterarmen verbunden ist. Der Rückenlehentragarm ist durch die Öffnung mit seinem Gleitlagerabschnitt hindurch geführt. Auf diese Weise wird eine besonders drehstabile Rückenlehnenanordnung erhalten, da eine große Anlagefläche und gleichzeitig als Lager dienende Fläche zwischen den beteiligten Bauteilen vorgesehen ist. Mit Vorteil bilden die Lagerkonsole, der Rückenlehentragarm sowie eine Innenfläche der Halterarme je ein Teil des Gleitlagers aus, an dem die Verstellvorrichtung hin- und her betätigbar ist und mittels Arretiermittel daran arretieren lässt.In a preferred embodiment, the adjusting device has a bearing bracket with a sliding bearing, wherein the bearing bracket is connected to the holder arms to form an opening. The Rückenlehentragarm is passed through the opening with its sliding bearing portion. In this way, a particularly rotationally stable backrest assembly is obtained because a large contact surface and at the same time serving as a bearing surface between the components involved is provided. Advantageously, the bearing bracket, the Rückenlehentragarm and an inner surface of the holder arms each form a part of the sliding bearing, on which the adjusting device can be actuated back and forth and lock it by means of locking means.
Ferner ist mit Vorteil vorgesehen, dass die Befestigungsarme jeweils einen endseitigen Lagerabschnitt zur Befestigung des rückenlehnenseitigen Lagers mit der Rückenlehne ausbilden. Mittels einer am Ende angebrachten Lagerung kann ein möglichst großer Abstand von Aufhängungspunkte für die Durchbiegungskurve der Rückenlehne in Querrichtung erzielt werden.Furthermore, it is advantageously provided that the fastening arms in each case form an end-side bearing section for fastening the backrest-side bearing to the backrest. By means of a mounted at the end storage the greatest possible distance from suspension points for the deflection curve of the backrest can be achieved in the transverse direction.
In einer besonders vorteilhaften Ausführungsform ist der Rückenlehnentragarm in seiner Höhenrichtung in einer im Wesentlichen geschwungenen Form und besonders vorteilhaft in einer S-förmig geschwungenen Form ausgebildet. Ein Gleitlagerabschnitt des Rückenlehentragearms ist folglich ebenfalls S-förmig ausgebildet, womit sich der Abstand und damit die Krümmung der Rückenlehne besonders vorteilhaft an die natürliche Form der Wirbelsäule anpassen lässt.In a particularly advantageous embodiment, the Rückenlehnentragarm is formed in its height direction in a substantially curved shape and particularly advantageous in an S-shaped curved shape. A slide bearing portion of the Rückenlehentragearms is therefore also S-shaped, whereby the distance and thus the curvature of the backrest can be particularly advantageous adapt to the natural shape of the spine.
Gemäß einer bevorzugten Variante der vorliegenden Erfindung sind die Lager seitlich an sich in Höhenrichtung erstreckenden Flächen, d.h. an vertikal verlaufenden Seitenflächen der Rückenlehne befestigt. Weiter vorteilhaft ist dabei eine Ausführung, bei der die Befestigungsarme mit ihren endeitigen Lagerabschnitten die Rückenlehne zumindest teilweise seitlich (flügelartig) umgreifen. So kann die Rückenlenenanordnung auch derart ausgebildet sein, dass der Betätigungsarm im Wesentlichen parallel zu einem der Befestigungsarme verläuft, wobei sich bevorzugt am Ende des Betätigungsarmes und zwar zwischen dem Befestigungsarm und der Rückenlehne, ein für den Stuhlnutzer zugänglichen Betätigungsabschnitt befindet, um den Betätigungsarm aus seiner Rastposition lösen zu können. Durch diese Anordnung lässt sich die Verstellvorrichtung besonders angenehm bedienen, da es möglich ist gleichzeitig den Betätigungsabschnitt und die beiden endseitigen Lagerabschnitte zu umgreifen und die Verstellvorrichtung in der Höhe einzustellen.According to a preferred variant of the present invention, the bearings are laterally at vertically extending surfaces, i. attached to vertically extending side surfaces of the backrest. Next advantageous is an embodiment in which the mounting arms engage around the backrest at least partially laterally (wing-like) with their endeitigen bearing sections. Thus, the Rückenlenenanordnung can also be designed such that the actuating arm extends substantially parallel to one of the mounting arms, preferably located at the end of the actuating arm between the mounting arm and the backrest, an accessible to the chair user operating portion to the actuating arm of his To be able to release the locking position. By this arrangement, the adjustment can be particularly pleasant to use, since it is possible to simultaneously encompass the operating portion and the two end-side bearing sections and adjust the adjustment in height.
Durch die erfindungsgemäße Anordnung und Ausführung der Verstellvorrichtung der Befestigungs- und Lagerpunkte der Rückenlehne lässt sich eine besonders ergonomisch anpassbare Rückenlehnenanordnung bereitstellen. Dank einer solchen Ausführungsform kann das Material der Rückenlehne bei genügender Elastizität die Druckkraft, mit der eine sich gegen die Rückenlehne abstützender Sitznutzer einwirkt, aufnehmen und gleichmäßig verteilen, ohne dass sich jedoch die Form der Rückenlehne insbesondere im Randbereich unerwünscht verformt.The inventive arrangement and design of the adjustment of the mounting and storage points of the backrest can provide a particularly ergonomic adjustable backrest assembly. Thanks to such an embodiment, the material of the backrest at sufficient elasticity, the pressure force with which acts against the backrest supporting a seat occupant, record and distribute evenly, but without the shape of the backrest, especially in the edge area undesirable deformed.
Gemäß der vorliegenden Erfindung wird ferner eine Rückenlehnenanordnung bereitgestellt, die über eine verformbare Rückenlehne sowie einen federnden Rückenlehnentragarm verfügt. Gemäß einer bevorzugten Variante der vorliegenden Erfindung ist dabei das untere Befestigungsende des Rückenlehnentragarms vorzugsweise über eine Verbindungsplatte mit einer Federvorrichtung ausgebildet und zwar zur federnden Befestigung der Rückenlehnenanordnung an einer vorzugsweise zentralen Stuhlstütze. So kann eine zentrale Stuhlstütze durch einen Teil der Verbindungsplatte des Rückenlehnentragarms hindurchragen, während die Federvorrichtung federnd gelagert wird. Auf diese Weise kann neben der durch die Verformbarkeit bereitgestellte Elastizität der Rückenlehne auch die gesamte Rückenlehnenanordnung federnd und hin-und her bewegt werden, um der sitzenden Person genügend Gegenkraft entgegen zu bringen, sobald sich diese auf dem Stuhl nach Hinten zurücklehnt. Insgesamt kann durch geeignete Kombination der Elastizität der verformbaren Rückenlehne und durch die Auswahl der Federkonstante der Federvorrichtung eine optimale Abstimmung zwischen Stabilität und Flexibilität erzielt werden.According to the present invention there is further provided a seat back assembly having a deformable backrest and a resilient backrest support arm. According to a preferred variant of the present invention, the lower attachment end of Rückenlehnentragarms is preferably formed via a connecting plate with a spring device for the resilient attachment of the backrest assembly to a preferably central chair support. Thus, a central chair support may protrude through a portion of the connecting plate of Rückenlehnentragarms while the spring device is resiliently mounted. In this way, in addition to the provided by the deformability elasticity of the backrest and the entire backrest assembly are resiliently moved back and forth to bring the sitting person enough counter-force, as soon as it leans back on the chair. Overall, a suitable combination of stability and flexibility can be achieved by suitable combination of the elasticity of the deformable backrest and by the selection of the spring constant of the spring device.
Die Rückenlehnenanordnung ist dadurch gekennzeichnet, dass das untere Befestigungsende des Rückenlehnentragarms mit einer Federvorrichtung, vorzugsweise über eine Verbindungsplatte verbunden ist, zur federnden Befestigung der Rückenlehnenanordnung an einem Stuhl. Besonders Vorteilhaft ist die Verwendung einer einstellbaren Schraubenfeder in der Federvorrichtung.The backrest assembly is characterized in that the lower attachment end of Rückenlehnentragarms is connected to a spring device, preferably via a connecting plate, for resilient attachment of the backrest assembly to a chair. Particularly advantageous is the use of an adjustable coil spring in the spring device.
Mit Vorteil erstreckt sich die Schraubenfeder von der Verbindungsplatte zusammen mit einem Gewindestab in Höhenrichtung, derart, dass die Verbindungsplatte von der Schraubenfeder gegen eine, ein Auflager bildende Oberseite eines am Stuhl vorgesehenen Sitzträgers gespannt werden kann.Advantageously, the coil spring extends from the connection plate together with a threaded rod in the height direction, such that the connecting plate of the coil spring against a, forming a support top of a chair provided on the seat support can be stretched.
Ferner ist mit Vorteil vorgesehen, dass das untere Befestigungsende des Rückenlehnentragarms einen auskragenden Befestigungsabschnitt mit Öffnungen zur Befestigung an der Verbindungsplatte aufweist.Furthermore, it is advantageously provided that the lower attachment end of Rückenlehnentragarms has a projecting attachment portion with openings for attachment to the connection plate.
In einer vorteilhaften Ausführungsform weist die Federvorrichtung einen axialen Gewindestab auf, der innerhalb der Schraubenfeder angeordnet ist. Ferner weist die Federvorrichtung bevorzugt ein in der Höhe bewegliches Achslager für den Gewindestab auf. Der Gewindestab ist durch eine vorzugsweise zylinderförmige Öffnung durch das Achsalger hindurchgeführt. Hierdurch erfährt die Schraubenfeder in ihrer Federchase eine Führung durch den Gewindestab.In an advantageous embodiment, the spring device has an axial threaded rod, which is arranged within the coil spring. Furthermore, the spring device preferably has a height-adjustable axle bearing for the threaded rod. The threaded rod is passed through a preferably cylindrical opening through the Achsalger. As a result, the coil spring experiences in its Federchase a guide through the threaded rod.
Mit Vorteil ist ferner an der Unterseite des Befestigungsabschnittes des Rückenlehnentragarms ein Schräganschlag zur Auflagerung auf einer korrespondierenden Gegenfläche eines an einem Stuhl angebrachten Sitzträgers vorgesehen. Der Sitzträger dient dabei als Auflager für die Verbindungsplatte und/oder einen Befestigungsabschnitt des Rückenlehnentragarms. In seiner Ausgangslage drückt die Schraubenfeder die Verbindungsplatte der Rückenlehenanordnung auf das Auflager des Sitzträgers und wird in dieser Stellung fixiert. Wird die Rückenlehne von einem Stuhlnutzer nach Rückwärts ausgelenkt, so hebt sich die Verbindungsplatte vom Auflager soweit ab, bis sich ein Kräftegleichgewicht zwischen der Kraft auf die Rückenlehne und der Rückstellkraft der Schraubenfeder an der Verbindungsplatte eingestellt hat. In dieser Lage kann der Sitznutzer hin- und herwippen und erfährt eine Stütze für den Rücken.Advantageously, further provided on the underside of the attachment portion of the Rückenlehnentragarms an inclined stop for mounting on a corresponding mating surface of a seat carrier mounted on a chair. The seat carrier serves as a support for the connecting plate and / or a mounting portion of the Rückenlehnentragarms. In its initial position, the coil spring presses the connecting plate of the backrest assembly on the support of the seat support and is fixed in this position. If the backrest is deflected by a user of the chair backwards, the connection plate lifts off the support until an equilibrium of forces between the force on the backrest and the restoring force of the coil spring on the connection plate has been established. In this position, the seat occupant can rock back and forth and undergoes a support for the back.
Sofern die Federkraft der Schraubenfeder einstellbar ist, kann für jeden Sitznutzer eine individuell bevorzugte Stützwirkung eingestellt werden.Provided the spring force of the coil spring is adjustable, for each seat user an individually preferred support effect can be set.
Vorteilhafte Ausführungsformen der Erfindung sind in den Unteransprüchen angegeben und werden nachfolgend anhand eines Ausführungsbeispiels mit Hilfe der Figuren näher erläutert. Hierbei zeigen:
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Figur 1 : eine Seitenansicht eines ersten Ausführungsbeispiels eines Bürostuhls mit einer Rückenlehnenanordnung in einer geschnittenen Ansicht, -
Figur 2 : eine exemplarische Seitenansicht einer Rückelehenanordnung in einer ersten und einer zweiten Einstellposition, -
Figur 3 : zeigt eine perspektivische Darstellung der Rückenlehnenanordnung ohne Rückenlehne; -
Figur 4 : zeigt eine perspektivische Ansicht eines Details der Verstellvorrichtung derFigur 3 ; -
Figur 5 : zeigt eine Schnittansicht entlang der SchnittlinieAA gemäß Figur 3 , -
Figur 6 : zeigt eine Seitenansicht einer Rückenlehnenanordnung mit einer Federvorrrichtung in einer Schnittansicht, -
Figur 7 : zeigt eine seitliche Schnittansicht durch eine Rückenlehnenanordnung gemäßFigur 6 in einer Zusammenwirkung mit einem Sitz, -
Figur 8 : zeigt einen Detaillausschnitt ausFigur 7 .
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FIG. 1 FIG. 2: a side view of a first embodiment of an office chair with a backrest arrangement in a sectional view, FIG. -
FIG. 2 FIG. 4 is an exemplary side view of a rearward facing assembly in a first and a second adjustment position; FIG. -
FIG. 3 : shows a perspective view of the backrest assembly without backrest; -
FIG. 4 FIG. 3 shows a perspective view of a detail of the adjusting device of FIGFIG. 3 ; -
FIG. 5 FIG. 3 is a sectional view taken along section line AA in FIGFIG. 3 . -
FIG. 6 1 shows a side view of a backrest arrangement with a spring device in a sectional view, -
FIG. 7 FIG. 1 shows a side sectional view through a seat back assembly according to FIGFIG. 6 in a collaboration with a seat, -
FIG. 8 : shows a detailFIG. 7 ,
Wie in
Wie in
As in
In
Die Öffnung 28 ist in ihrer Querschnittsform im Wesentlichen korrespondierend zur Querschnittsform des Rückenlehentragarms 10 im Bereich des Gleitlagerabschnitts 14 ausgebildet. Der Rückenlehnentragarm 10 ragt mit seinem Gleitlagerabschnitt 14 durch die Öffnung 28 hindurch. Die Verstellvorrichtung 20 kann entlang des Gleitlagerabschnitts 14 auf- und ab verschoben werden. Aus
Die Verstellvorrichtung 20 verfügt ferner über eine Rastvorrichtung 24, die mit einem Betätigungsarm 25 verbunden ist. Die Rastvorrichtung 24 ist als hin- und her bewegbare Rastvorrichtung 24 ausgebildet, die mittels des Betätigungsarmes 25 von einer Rastposition in eine Verstellposition (entsprechend
In
Mittels der
Im Folgenden wird auf die
Die Federvorrichtung 50 weist eine Schraubenfeder 52 auf, die gegen ein oberes Lagermittel 53 gespannt ist. Die Betätigungsrichtung der Federvorrichtung 50 wird durch den Gewindestab 54 definiert. Innerhalb der Schraubenfeder 52 ist ein Gewindestab 54 angeordnet, der mit dem oberen Lagermittel 53 verbunden ist.The
Am unteren Ende des Gewindestabs 54 befindet sich eine Flügelschraube 55. Durch drehende Betätigung der Flügelschraube 55 wird diese am Gewindestab, je nach Drehrichtung so bewegt, dass die Feder mehr- oder weniger stark gespannt wird, womit.sich die Federkraft der Federvorrichtung 50 einstellen lässt. Die Verbindungsplatte 58 ist mit einem, um den Gewindestab 54 auf- und abbewegbaren Achslager 65 verbunden. Das Achslager 65 weist eine Öffnung 67 für den Gewindestab 64 auf. Wie in
Das Achslager 65 ist aus einem zylindrischen Ringelement mit einem daran befestigten Federteller 66 ausgebildet, auf dem das untere Ende der Schraubenfeder 52 auflagert. Die Schraubenfeder 52 drückt, solange die Rückenlehne nicht ausgelenkt wird, die Verbindungsplatte 58 auf den Sitzträger 63 in eine untere Position (Ausgangsposition). Durch Auslenken der Rückenlehne 3 wird die Verbindungsplatte 58 und das daran befestigte Achslager 65 in die, in der
Ein Stuhlnutzer kann mit der Rückenlehne 3 zwischen einer Ausgangsposition und einer ausgelenkten Position (Auslenkposition) hin- und herwippen. Gleichzeitig ergibt sich daraus eine korrespondierende Auf- und Abbewegung der Verbindungsplatte 58. Wie in
Mit Vorteil ist die Verbindungsplatte 58 mit einer Öffnung im Bereich des Ringabschnitts 64 versehen, die derart ausgebildet ist, dass eine Auslenkbewegung der Verbindungsplatte 58 um einen Winkel α erfolgen kann. Bevorzugt ist es daher, wie in dem vorliegenden Ausführungsbeispiel, den Innendurchmesser der Öffnung im Bereich des Ringabschnitts 64 größer als den Außendurchmesser des Ringabschnittes 64 auszubilden.Advantageously, the connecting plate 58 with an opening in the region of Ring section 64 provided, which is designed such that a deflection movement of the connecting plate 58 can be made by an angle α. It is therefore preferred, as in the present embodiment, the inner diameter of the opening in the region of the annular portion 64 is greater than the outer diameter of the annular portion 64 form.
Wie in
In einer alternativen Ausführungsform der zuvor beschriebenen Gestaltung der Verbindung der Federvorrichtung 50 mit dem Rückenlehenentragearm 10 kann diese Verbindung auch mittels mehreren Verbindungsplatten 58 oder vergleichbare Verbindungsvorrichtungen erfolgen.In an alternative embodiment of the above-described design of the connection of the
- 11
- RückenlehnenanordnungBack assembly
- 22
- Bürostuhloffice chair
- 33
- Rückenlehnebackrest
- 44
- LordosenstützbereichLordosenstützbereich
- 55
- Lehnenmattesit mat
- 5a5a
- Ausnehmungenrecesses
- 1010
- Rückenlehnentragarmseat back support
- 1111
- Befestigungselementfastener
- 1313
- Gleitlagerbearings
- 1414
- Gleitlagerabschnittslide bearing section
- 1515
- Unteres BefestigungsendeLower attachment end
- 1616
- Oberes BefestigungsendeUpper attachment end
- 2020
- Verstellvorrichtungadjustment
- 2121
- Lagercamp
- 2222
- Befestigungsarmemounting arms
- 2323
- Lagerabschnittbearing section
- 2424
- Rastvorrichtunglocking device
- 24a24a
- Rastmittellatching means
- 24b24b
- GegenrastmittelSecuring means
- 2525
- Betätigungsarmactuating arm
- 2626
- Lagerkonsolebearing bracket
- 2727
- Gleitlagerbearings
- 27a27a
- Gleitlagernockeplain bearing cam
- 27b27b
- Gleitlagernockeplain bearing cam
- 2828
- Öffnungopening
- 2929
- Betätigungsabschnittactuating section
- 3030
- Rückenlehnenseitige LagerBackrest side bearings
- 3131
- Seitenflächeside surface
- 3232
- Seitenflächeside surface
- 3333
- Befestigungsmittelfastener
- 3434
- RückstellfederReturn spring
- 5050
- Federvorrichtungspring device
- 5151
- Federaufhängungspring suspension
- 5252
- Schraubenfedercoil spring
- 5353
- Lagermittelbearing means
- 5454
- Gewindestabthreaded rod
- 5555
- Einstellvorrichtung (Flügelschraube)Adjustment device (thumbscrew)
- 5656
- Befestigungsabschnittattachment section
- 5757
- Befestigungskassettemounting tray
- 5858
- Verbindungsplatteconnecting plate
- 5959
- SchräganschlagAngular stop
- 6060
- Stuhlstützechair support
- 6161
- SitzSeat
- 6262
- Sitzflächeseat
- 6363
- Sitzträgerseat support
- 6464
- Ringabschnittring section
- 6565
- AchslagerAchslager
- 6666
- Federtellerspring plate
- 6767
- Öffnungopening
- 6868
- AuflagerIn stock
- 7070
- Anschlagattack
Claims (15)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP12188247.6A EP2719304B1 (en) | 2012-10-11 | 2012-10-11 | Office chair with back rest assembly |
US14/434,533 US20150272334A1 (en) | 2012-10-11 | 2013-06-13 | Back rest arrangement |
PCT/EP2013/062268 WO2014056637A1 (en) | 2012-10-11 | 2013-06-13 | Back rest arrangement |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP12188247.6A EP2719304B1 (en) | 2012-10-11 | 2012-10-11 | Office chair with back rest assembly |
Publications (2)
Publication Number | Publication Date |
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EP2719304A1 true EP2719304A1 (en) | 2014-04-16 |
EP2719304B1 EP2719304B1 (en) | 2016-08-10 |
Family
ID=47049023
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP12188247.6A Active EP2719304B1 (en) | 2012-10-11 | 2012-10-11 | Office chair with back rest assembly |
Country Status (3)
Country | Link |
---|---|
US (1) | US20150272334A1 (en) |
EP (1) | EP2719304B1 (en) |
WO (1) | WO2014056637A1 (en) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
PL2759230T3 (en) * | 2013-01-23 | 2016-04-29 | L & P Property Management Co | Chair back height adjustment mechanism and chair |
US9596941B1 (en) | 2016-02-02 | 2017-03-21 | Office Master Inc. | Chair back with height and lumbar adjustment |
US10021985B2 (en) * | 2016-04-28 | 2018-07-17 | James E. Grove | Adjustable back support assembly for the back of a chair |
CN107095509A (en) * | 2017-05-31 | 2017-08-29 | 浙江钰盛家具有限公司 | Novel storage sofa |
DE102017214298A1 (en) * | 2017-08-16 | 2019-02-21 | Sedus Stoll Ag | Connecting arrangement for a backrest and office or conference seating furniture |
US10633096B1 (en) * | 2018-10-15 | 2020-04-28 | Ami Industries, Inc. | Supplemental recline panel for aircraft cabin attendant seat |
CN109497751A (en) * | 2018-11-26 | 2019-03-22 | 陈敏 | A kind of waist pad structure of seat |
EP3735809B1 (en) * | 2019-05-07 | 2023-07-05 | CNH Industrial Sweden AB | Mounting assembly for plough skimmers |
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EP0291298A1 (en) * | 1987-05-13 | 1988-11-17 | Joseph Mary Jacobsen | Measuring apparatus |
WO2002024125A1 (en) * | 2000-09-19 | 2002-03-28 | Yoo Han Keel | Chair for correcting an improper alignment of spinal vertebrae and method for correcting an improper alignment of spinal vertebrae by means of the chair |
WO2003099071A1 (en) * | 2002-05-20 | 2003-12-04 | Herman Miller, Inc. | Seating structure having an adjustable body support member |
EP1566120A1 (en) | 2004-02-21 | 2005-08-24 | Armin Sander | Backrest, particularly for an office-chair |
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EP2047769A1 (en) * | 2007-10-12 | 2009-04-15 | Provenda Marketing AG | Seat with a seat spring |
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US6276755B1 (en) * | 1999-11-09 | 2001-08-21 | Tung-Hua Su | Swivel arrangement for a chair seat |
TWM269799U (en) * | 2005-01-12 | 2005-07-11 | Comfordy Co Ltd | Improvement of reticular chairback structure |
CA2850677C (en) * | 2005-03-01 | 2015-11-10 | Haworth, Inc. | Chair back with lumbar and pelvic supports |
US7104604B1 (en) * | 2005-12-14 | 2006-09-12 | Russell International Corporation | Waist supporting structure of a dual-layer chair back |
-
2012
- 2012-10-11 EP EP12188247.6A patent/EP2719304B1/en active Active
-
2013
- 2013-06-13 WO PCT/EP2013/062268 patent/WO2014056637A1/en active Application Filing
- 2013-06-13 US US14/434,533 patent/US20150272334A1/en not_active Abandoned
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Publication number | Priority date | Publication date | Assignee | Title |
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EP0291298A1 (en) * | 1987-05-13 | 1988-11-17 | Joseph Mary Jacobsen | Measuring apparatus |
WO2002024125A1 (en) * | 2000-09-19 | 2002-03-28 | Yoo Han Keel | Chair for correcting an improper alignment of spinal vertebrae and method for correcting an improper alignment of spinal vertebrae by means of the chair |
WO2003099071A1 (en) * | 2002-05-20 | 2003-12-04 | Herman Miller, Inc. | Seating structure having an adjustable body support member |
EP1566120A1 (en) | 2004-02-21 | 2005-08-24 | Armin Sander | Backrest, particularly for an office-chair |
DE102004035647B4 (en) | 2004-07-22 | 2008-03-20 | Bock 1 Gmbh & Co. Kg | Seating furniture, in particular office chair |
DE202005019654U1 (en) | 2005-12-16 | 2007-04-26 | König + Neurath AG | Backrest and chair |
EP2047769A1 (en) * | 2007-10-12 | 2009-04-15 | Provenda Marketing AG | Seat with a seat spring |
Also Published As
Publication number | Publication date |
---|---|
WO2014056637A1 (en) | 2014-04-17 |
EP2719304B1 (en) | 2016-08-10 |
US20150272334A1 (en) | 2015-10-01 |
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